JP2000325826A - Crawler crushing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operator with convenience for boarding a conveyor at the time of maintenance while assuring sufficient strength in a power unit supporting structure. SOLUTION: This crushing machine has a hopper 2, a jaw crusher, a feeder 4, a power unit 32 disposed on the crushing machine rear side of a crushing machine mounting section 9A and the conveyor 5 for ejecting the crushed materials to be crushed to a rear side. In such a case, the rear side end face 32aA of a power unit frame exists further nearer the rear side than the rear side end face 109A of a power unit frame loading member. The rear side end face 109A of the power unit frame loading member exists further nearer the rear side than the rear side end face of the crushing machine mounting section 9A. The rear side end face 32aA of the power unit frame and the rear side end face of the crushing machine mounting section 9A have lacking shapes constituting the shapes lacking increasingly downward when viewed from the lateral cross section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled crusher for transporting crushed material to a side opposite to a hopper by a conveyor, and more particularly, to a worker during maintenance while ensuring sufficient strength in a power unit support structure. The present invention relates to a self-propelled crusher capable of facilitating getting into a conveyor.

[0002]

2. Description of the Related Art Crushers are used for various types of large and small rocks, construction wastes, industrial wastes, and natural stones generated at construction sites, such as concrete lumps carried out when dismantling buildings and asphalt lumps discharged during road repairs. Before transporting, such as crushing to a predetermined size at the work site, it is intended to reuse waste materials, facilitate construction, reduce costs, and the like.

A self-propelled crusher capable of running on its own among the crushers is a traveling body having a frame, left and right crawler tracks provided on the frame, and a traveling body provided at an upper portion thereof, which is provided with a hopper. A crusher main body equipped with a crushing device for crushing the input crushed material to a predetermined size, and a feeder for guiding the crushed material input from the hopper to the crushing device, and a crushed material crushed and reduced by the crushing device. And a magnetic separator provided above the conveyor and magnetically attracting and removing magnetic substances contained in the crushed material being transported on the conveyor.

At this time, the crawler track, the crushing device, the feeder, the conveyor, and the magnetic separator are respectively hydraulically driven actuators, that is, left and right traveling hydraulic motors, crushing hydraulic motors, feeder hydraulics. It is driven and driven by a motor, a hydraulic motor for a conveyor, and a hydraulic motor for a magnetic separator. Pressure oil for driving these hydraulic actuators is supplied by an engine-driven pump provided in a power unit located at a rear end of the crusher main body.

In recent years, in a self-propelled crusher, for example, as described in Japanese Patent Application Laid-Open No. HEI 5-115809, when a crushed object is put into a hopper with a hydraulic shovel, it is not obstructed and magnetic separation is performed. A conveyor is installed behind the crusher (opposite to the hopper) so that workers who perform maintenance of the machine are not within the working range of the hydraulic shovel.
The crushed material is transported to the rear side (opposite to the hopper) of the crusher. At this time, the weight of the unloading side portion of the conveyor is often supported by the power unit via an intermediate member.

In the self-propelled crusher having the above-described structure, the crushed object put into the hopper above the crusher is guided to the crushing device by the feeder below the hopper, and crushed by the crushing device. The crushed crushed material falls from a space below the crushing device onto a conveyor below the crushing device, and is conveyed to the opposite side of the hopper by this conveyor. During this transportation, a magnetic separator disposed above the conveyor adsorbs and removes, for example, rebar pieces mixed in the concrete lump. By such an operation, the crushed material is finally sized to some extent and carried out from the rear portion of the crusher.

[0007] In recent years, under the background of the promotion of waste recycling, such as the enforcement of the Recycling Resources Promotion Law (the so-called Recycling Law) (October 1991), concrete containing steel bars has been increasing as a material to be crushed. When such concrete is put into the crushing device, the reinforcing bars contained in the concrete may not be crushed, and may be bent in a complicated and diverse manner by the external force from the crushing device and discharged to the lower side of the crushing device. In such a case, the bent rebar stays between the discharge port at the bottom of the crusher and the conveyor below it, or immediately after the rebar falls on the conveyor and starts to be transported, it is attached to a nearby structure. There is a possibility that they may be stuck and stay. If such stagnation occurs, it is necessary to immediately stop the operation of the crushing device and remove the stagnation (clogging) of the reinforcing bar.

[0008] Such maintenance work needs to be performed by an operator directly entering the space below the crusher. At this time, in the self-propelled crusher that transports the above-mentioned crushed material to the opposite side of the hopper by the conveyor, the worker gets on the conveyor from the side near the power unit immediately behind the crawler track and directly on the conveyor. Often, it reaches the space below the crusher. This usually means that a cover is provided on the opposite side of the conveyor (the front side of the crusher) to prevent the crushed material falling from below the crusher from spilling out, or the feeder is a grizzly type. In some cases, a passage (chute) is provided for guiding the fine particles selected and dropped from between the serrated plates to the conveyor, so that it is difficult to enter from the front side of the crawler track. It depends on the reason.

For the purpose of convenience of the worker getting on the conveyor from the rear side of the crawler crawler during such maintenance, for example, as described in Japanese Patent Application Laid-Open No. H11-28383, a power unit has a basic lower structure. Some power unit frames are provided so as to protrude further rearward from the rear end of the frame.

[0010]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the self-propelled crusher disclosed in Japanese Patent No. 383, the power unit frame is made to protrude farther rearward from the rear end of the frame, thereby securing a large space for the worker to be formed below the power unit. is there.

[0011] However, the following problems exist in the self-propelled crusher according to the above-mentioned conventional technology. That is,
In this self-propelled crusher, a substantially flat box-shaped power unit frame loading member is placed and fixed on the rear end of the frame, and a power unit is placed and fixed on the upper portion of the power unit frame loading member. . At this time, the rear end face of the power unit frame is positioned more rearward than the rear end face of the power unit frame loading member, and the rear end face of the power unit frame loading member coincides with the rear end face of the frame; and By making the rear end surface of the rear surface obliquely cut into an inverted trapezoidal shape, a space for a worker to enter is secured.

[0012] Due to such a structure, the power unit frame is supported with only a small portion on the front side thereof being loaded on the power unit frame loading member, and most of the other portions floating in the air. Becomes Here, as described above, since a heavy object such as an engine or a hydraulic pump is stored in the power unit, its own weight is relatively heavy. Therefore, the support structure as described above may not be sufficient in strength. further,
As described above, in this power unit, the carry-out side portion of the conveyor is suspended and supported via the arm-shaped intermediate member, and the weight is added, so that it is more difficult to secure the strength.

The present invention has been made in view of the above circumstances, and an object of the present invention is to ensure the strength of a power unit support structure and to make it easier for an operator to get on a conveyor during maintenance. It is an object of the present invention to provide a self-propelled crusher capable of performing the following.

[0014]

(1) In order to achieve the above object, the present invention provides a frame provided with a crusher mounting portion and a leg, a traveling means provided on the leg, and a crusher. A hopper provided on one side in the longitudinal direction of the machine mounting portion, for receiving the crushed object, a crushing device for crushing the crushed object received by the hopper, and conveying the crushed object received by the hopper to the crushing device. A self-propelled crusher including a feeder, a power unit provided on the other side in the longitudinal direction of the crusher mounting portion, and a conveyor for carrying out the crushed material crushed by the crushing device to the other side. A power unit frame forming a basic lower structure of the power unit; and a power unit frame provided on the other side in the longitudinal direction of the crusher mounting portion, the power unit frame being loaded on the upper side. A loading member, and the other end surface of the power unit frame is further located on the other side than the other end surface of the power unit frame loading member, and the power unit frame loading The end face on the other side of the member is further located on the other side than the end face on the other side of the crusher attachment section, and at least one of the power unit frame loading member and the crusher attachment section. The end face on the other side is provided with a deficit-shaped portion that is depressed as viewed downward in a side cross section.

[0015] A power unit frame, which is a basic lower structure of the power unit, is loaded on an upper portion of the power unit frame loading member, and the power unit frame loading member is provided on the other side (rear side) in the longitudinal direction of the crusher mounting portion, Thereby, the weight of the power unit is finally supported by the frame.

At this time, in the present invention, the other side (rear side) end face of the power unit frame loading member is further further (rear side) than the other side (rear side) end face of the crusher mounting portion. And the other side (rear side) end face of the power unit frame is positioned on another side (rear side) further than the other side (rear side) end face of the power unit frame loading member. As a result, the frame crusher mounting portion, the power unit frame loading member, the power unit frame, and the upper member, the stair-like support structure in which the end face is located on the other side, the weight of the power unit is the stair structure. The crusher is gradually transmitted to the front side through the crusher, and is finally supported on the other side (rear side) of the mounting portion of the frame crusher.

Therefore, as compared with the conventional structure in which the rear end face of the power unit frame loading member is made coincident with the rear end face of the frame, the portion of the power unit frame in which there is nothing floating at the lower portion is reduced, and the power unit frame is reduced in strength. A reasonable support structure can be provided. Accordingly, a power unit that houses a heavy object such as an engine or a hydraulic pump and has a relatively heavy own weight can be supported with sufficient strength.

At this time, at least one of the end faces of the power unit frame loading member and the frame crushing machine mounting portion (rear side) has a shape in which the lower the end thereof when viewed in a side cross section, for example, an inverted trapezoidal shape. By providing the missing shape part of the cut shape, the free space can be expanded only in the area corresponding to the missing part in the space formed below the power unit frame, so that when the worker gets on the conveyor during maintenance, It is possible to secure a sufficient space for a worker to enter.

(2) In the above (1), preferably,
The missing shape portion has a shape that is obliquely cut into an inverted trapezoidal shape.

(3) In the above (1), preferably, the unloading side portion of the conveyor is supported by being suspended from the power unit via an intermediate member.

In this case, the weight of the unloading side (rear side) of the conveyor is also applied to the power unit via the intermediate member, so that the power unit supporting structure needs to have a greater strength. Therefore, the step-like support structure according to the present invention described in the above (1) becomes more effective.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the self-propelled crusher of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing the entire structure of the self-propelled crusher according to the present embodiment. FIG. 2 is a top view of the self-propelled crusher shown in FIG.
FIG. 3 is a sectional view taken along the line III-III in FIG.

In FIGS. 1 to 3, the self-propelled crusher 1 responds to the need for miniaturization based on the background of the recent promotion of waste recycling. For example, the total weight is about 10 tons. It can be loaded and transported on a 10-ton load truck (preferably a single truck type truck other than a trailer) to improve transportability.

The self-propelled crushing machine 1 has a hopper 2 into which a crushed object is charged by a working tool such as a bucket of a hydraulic shovel, and receives the crushed object. 2, a crushing device for crushing the crushed material received in 2 into a predetermined size and discharging the crushed material downward, for example, a jaw crusher 3 and a feeder 4 for conveying and guiding the crushed material received in the hopper 2 to the jaw crusher 3 are mounted. A crusher body 7 and a conveyor 5 for receiving the crushed material crushed by the jaw crusher 3 and discharged downward, transporting the crushed material to the rear side of the crusher 1 (the right side in FIGS. 1 and 2), and unloading it.
A magnetic separator 6 provided above the conveyor 5 for magnetically sucking and removing a magnetic substance contained in the crushed material being transported on the conveyor 5, and a traveling body provided below the crusher main body 7 8 is provided.

The traveling body 8 includes a crusher mounting portion 9A and leg portions 9A.
B and a track frame 9 having left and right crawler tracks 8a provided on the legs 9B, and the crusher mounting portion 9A is integrally welded to the upper portion of the legs 9B. It is provided as. Track frame leg 9
Of both side surfaces 9B1, 9B2 arranged in the lateral direction of B,
An opening 50 is formed in the side surface 9B1 so that the inside can be seen.

The hopper 2 and the feeder 4 are located on the front side in the longitudinal direction of the track frame 9 (specifically, the crusher mounting portion 9).
A is mounted on the front side in the longitudinal direction of A, that is, on the left side in FIGS. 1 and 2), and specifically, is mounted above the end of the crusher mounting portion 9A.

The jaw crusher 3 is located on the rear side (the right side in FIGS. 1 and 2) of the hopper 2 and the feeder 4, and as shown in FIGS.
Is mounted on an intermediate portion in the longitudinal direction (the horizontal direction in FIGS. 1 and 2). At this time, the driving force generated by the crusher hydraulic motor 10 is applied to the flywheel 1 via the belt 11.
2 and the driving force transmitted to the flywheel 12 is converted into the oscillating motion of the moving teeth 3a (see FIG. 2) by a known conversion mechanism, and the moving teeth 3a are moved relative to the fixed teeth 3b (the same). The object to be crushed supplied from the feeder 4 is crushed to a predetermined size by swinging back and forth. The upper and side portions of the jaw crusher 3 are covered with a housing 13, and an openable / closable cover 14 is provided on an upper portion of the housing 13, and by opening the cover 14, the upper portion is opened as shown in FIG. Directly above and on the side
The inside of the jaw crusher 3 can be visually recognized from the upper side (including the front and rear side).

As shown in FIGS. 1 and 2, the feeder 4 has a support 16 at a longitudinal end (left and right in FIGS. 1 and 2) and a front end (left in FIGS. 1 and 2).
The hopper 2 is mounted on a feeder frame 16 provided through a. The feeder 4 is a so-called grizzly feeder, and a plurality of (two in this example) saw teeth on which the crushed material from the hopper 2 is placed by the driving force generated by the feeder hydraulic motor 15. The bottom plate including the plate 4a is vibrated. In this way, the crushed objects put into the hopper 2 are sequentially conveyed and supplied to the jaw crusher 3 (= conveyance function), and fine earth and sand attached to the crushed objects during the conveyance are removed from the gaps between the saw teeth of the serrated plate 4a. It is designed to fall down. That is, the sieve-like plate 4a also has a sorting function of sorting out crushed objects having a particle size smaller than the size of the gap by sifting the crushed objects having a smaller particle size than the size of the gap between the saw teeth. .

The conveyer 5 has a carry-out side (rear side) portion via a support member 105a and a power unit 3 described later.
2 and is suspended and supported. The opposite side of the unloading side (front side) is located below the track frame crusher mounting portion 9A as shown in FIG. 1, but via the support members 105b and 105c, the track frame crusher mounting portion 9A. It is supported so that it can be hung from. The conveyor 5 drives the belt 5a by a hydraulic motor 17 for the conveyor, thereby transporting the crushed material dropped from the jaw crusher 3 onto the belt 5a.

The magnetic separator 6 is attached to a power unit 32 to be described later via a support member 6b. The magnetic separator 6 has a magnetic separator belt 6a disposed above the conveyor belt 5a so as to be substantially orthogonal to the conveyor belt 5a. By driving the magnetic force from the magnetic force generating means (not shown) around the belt 6a by driving the magnetic force from the magnetic force generating means (not shown) by the hydraulic motor 18 for magnetic separator, the magnetic material is attracted to the belt 6a, and then the conveyor belt is driven. The conveyor belt 5a is transported in a direction substantially perpendicular to the conveyor belt 5a and dropped to the side of the conveyor belt 5a.

Each of the endless track crawler tracks 8a is bridged between a driving wheel 19 provided on the traveling body 8 and an idler 20, and the traveling hydraulic motor 2 provided on the driving wheel 19 is provided.
The crusher 1 is made to run by a driving force given by a motor 1 (not shown).

The detailed structure of the truck frame crusher mounting portion 9A will be described with reference to FIGS. FIG. 4A is a top view showing the detailed structure of the truck frame crusher mounting portion 9A, FIG. 4B is a side view seen from the direction B in FIG. 4A, and FIG. a) Front view seen from the middle C direction,
FIG. 4D is a rear view as viewed from the direction D in FIG. 4A. FIG. 5A is a cross-sectional view taken along the line V _A -V _{A in} FIG. 4A, and FIG. 5B is a cross-sectional view taken along the line V _B -V _B in FIG. 4A.

4 (a) to 4 (d), FIG. 5 (a),
In FIG. 5B, the track frame crusher attachment portion 9A includes members 9a and 9b arranged in the longitudinal direction of the crusher attachment portion 9A, and these members 9a and 9b.
9c, member 9 fixed so as to bridge between
d, member 9e.

The members 9a and 9b are shown in FIGS.
As particularly shown in FIG. 2D, each is constituted by a substantially rectangular tubular member forming a substantially closed space 23 therein. Further, the members 9a and 9b made of the substantially square tubular members are arranged such that the opening side having a substantially U-shaped cross section is located outside the track frame 9 in the width direction (specifically, the short direction of the track frame crusher mounting portion 9A). The channel members 9a ₁ and 9b ₁ arranged to face (upper side or lower side in FIG. 4 (a)) and the substantially flat plate members 9a ₂ and 9b ₂ are joined, and both ends are joined to the members 9a. ₃ and 9b ₃ (see FIGS. 4 (c) and 5 (b)). At this time, the rear end surfaces 9aA, 9bA of the members 9a, 9b
Has a shape which is obliquely cut into an inverted trapezoidal shape as shown in FIG.

The members 9c and 9d are channel members having a substantially U-shaped cross section, and are welded to the members 9a and 9b, respectively. Fixing portions 9c ₂ and 9d ₂ for mounting and fixing the hopper 2 and the feeder 4 are attached to the upper surfaces of the members 9a and 9b, respectively.
At this time, the member 9c is connected to the channel member 9c _1.
Are arranged so that the substantially U-shaped opening side faces the longitudinally rearward side (the right side in FIGS. 4A and 4B) of the track frame crusher mounting portion 9 </ b> A. Conversely front longitudinal side of the track frame crusher attachment portion 9A the open side of the channel member 9d ₁ is shaped substantially U (FIG. 4 (a), the FIG. 4 (b) medium left) is arranged to direct ing. Although illustrations other than FIG. 4A are omitted, members 9a, 9b, a fixing portion 9c _{2 of} the member 9c, and a fixing portion 9d ₂ of the member 9d have columns for supporting the feeder frame 16 described above. Bolt 26 for fixing 16a
A bolt hole 27 for attaching (see FIG. 1) is provided.

The member 9e, like the members 9a and 9b, is a substantially rectangular tubular member that forms a substantially closed space 28 (see FIG. 4B) inside, and is welded to the members 9a and 9b. ing. Member 9a, the upper surface of 9b, has a structure of attaching the fixing portion 9e ₂ for mounting and fixing the crusher 3. A substantially square tubular member 9e ₁ at this time member 9e is a longitudinal front side of the track frame crusher attachment portion 9A the shaped opening of the substantially U (FIG. 4 (a), the FIG. 4 (b) Medium left) is constructed by joining the channel member 9e ₁₁ and substantially flat plate member 9e ₁₂ arranged to direct. At this time, the fixed portion 9e _2, the front side of the crusher frame 13a located at the bottom of the housing 13 accommodating the jaw crusher 3 (see FIG. 1) (Fig. 4
4 (a) and the portion (left side in FIG. 4 (b)). The rear side of the crusher frame 13a (FIG. 4 (a), the middle right FIG. 4 (b)) for mounting the support part, the crusher support member 9g having the same structure as the fixing portion 9e _2, The members 9a and 9b are respectively fixed to portions on the rear side of the member 9e.
Then, although not shown other than FIG. 4 (a), the fixed portion 9e ₂ and crusher supporting member 9g of the member 9e,
A bolt screw hole 30 for attaching a bolt 29 (see FIG. 1) for fixing the crusher frame 13a is provided.

The crusher supporting member 9g of the member 9b
On the further rear side (right side in FIGS. 4A and 4B), a tension applying mechanism 31 (FIG. 1) for applying tension to the belt 11 that transmits the driving force from the crushing hydraulic motor 10.
9) for attaching the lower end of the tension applying mechanism 9h.

Further, the rear side in the longitudinal direction of the truck frame crusher mounting portion 9A having the above configuration (FIGS. 4A and 4A).
(B) Middle right) A power unit frame loading member 109 having a substantially box shape is provided at an end portion, and a power unit frame 32a serving as a basic lower structure of the power unit 32 is mounted on an upper portion thereof (FIG. 1). reference). This power unit frame loading member 109 is a member 9
4a and 9b are mounted and fixed in the same direction as the members 9a and 9b, respectively, at the rear end (the right side in FIGS. 4A and 4B) in the longitudinal direction. FIG. 4 (a)
Substantially rectangular tubular members 109a, 109b forming
It is composed of members 109c and 109d fixed so as to bridge between the substantially rectangular tubular members 109a and 109b.

The substantially rectangular tubular members 109a and 109b are formed as shown in FIG.
As shown in (d), the opening side of the substantially U-shaped cross section is directed outward in the width direction (short direction, up and down direction in FIG. 4A) of the track frame crusher mounting portion 9A. It is constructed by joining the channel member 109a _1, 109b ₁ and the substantially flat plate member 109a _2, 109b ₂ arranged on.

As shown in FIG. 4 (b), the members 109c and 109d are each constituted by a channel member arranged so that the opening side having a substantially U-shaped cross section is directed downward. Although illustrations other than FIG. 4A are omitted, these members 109c and 109d are provided with bolt screw holes 33 for attaching bolts (not shown) for fixing the power unit frame 32a. Have been.

At this time, as shown in FIGS. 1 and 4 (a) and 4 (b), the rear end surface 109A of the power unit frame loading member 109 is connected to the rear side of the members 9a and 9b of the track frame crusher mounting portion 9A. End faces 9aA, 9bA
The rear end surface 32aA of the power unit frame 32a is located further rearward than the rear end surface 109A of the power unit frame loading portion.

Returning to FIGS. 1 to 3, the power unit 32
Is the track frame crusher mounting portion 9A as described above.
4 (a) and 4 (b), and is located further rearward than the jaw crusher 3 (right in FIGS. 1 and 2). Then, at least one of the hydraulic motors for discharging hydraulic oil to the hydraulic motors 10 for the crusher, the hydraulic motor 15 for the feeder, the hydraulic motor 17 for the conveyor, the hydraulic motor 18 for the magnetic separator, and the left and right traveling hydraulic motors 21 is provided. Hydraulic pumps (not shown), an engine (the same as a prime mover) for driving the hydraulic pumps, and a plurality of control valves for controlling the direction and flow rate of hydraulic oil supplied from the hydraulic pumps to the hydraulic actuators A control valve device (same as above), a fuel tank 34 of the engine having a refueling port 34a, and a hydraulic oil tank 35 having a refueling port 35a are incorporated therein.

In the power unit 32, when the engine below the engine cover 36 is started, the hydraulic pump is driven as described above. On the other hand, the driving force rotates a fan (not shown) provided on the upstream side of the cooling air (described later) of the engine, and external air is introduced from the intake hole 37 into the internal space of the power unit 32. After cooling the radiator (the cooling water inspection port 38 is shown in FIG. 2), it flows into the fan. Further, the cooling air blown out from the fan cools an engine, a muffler (not shown), a hydraulic pump, and the like, and is then discharged to the atmosphere from an exhaust hole 39. At this time, the exhaust gas from the engine flows into the muffler from an exhaust manifold (not shown) of the engine, is muffled, and is discharged into the atmosphere from an exhaust gas pipe 40 connected to the muffler. Reference numeral 41 denotes an intake port of an air cleaner for purifying intake air to the engine.

The front side of the power unit 32 (FIG. 2)
A driver's seat 42 on which an operator rides is provided on the left side (middle left). When the operator stands in the driver's seat 42 (see FIG. 1), the state of supply of the crushed material by the feeder 4 during the crushing operation. And the state of crushing by the jaw crusher 3 can be monitored. In addition, the driver's seat 4 is attached to the truck frame crusher mounting portion 9A.
Auxiliary step 9Aa to be a foothold for getting on and off
Is attached.

Further, the rear side (right side in FIG. 2) end 32b of the power unit 32 has a shape in plan view,
It has a substantially arc shape. At this time, conveyor 5
Means that the unloading end 5b is the power unit rear end 3
2b, so that the carry-out side (right side in FIG. 1) of the conveyor 5 extends outward (rearward) from the power unit rear end 32b. I have.

The jaw crusher 3, feeder 4, conveyor 5, magnetic separator 6, and track crawler 8a
Is driven by a known hydraulic drive device including the crusher hydraulic motor 10, the feeder hydraulic motor 15, the conveyor hydraulic motor 17, the magnetic separator hydraulic motor 18, and the traveling hydraulic motor 21.

That is, for example, when the self-propelled crusher 1 is self-propelled, the pressure oil from the hydraulic pump is supplied to the driver's seat 4.
2 is supplied to the traveling hydraulic motor 21 via a traveling control valve (not shown) in a control valve device which is switched according to the operation of the operation levers 52 and 53, whereby the crawler track 8a is driven to travel. The body 8 runs.

During the crushing operation, for example, the driver's seat 42
When the feeder start switch (the same), the crusher start switch (the same), and the conveyor / magnetic separator start switch (the same) of the operation panel (not shown) provided in the above are sequentially pressed, the operation signal is transmitted to the control panel 150 (the 2), and is output as a drive signal from the controller, and is supplied to the control valve for the feeder (the same), the control valve for the crushing (the same), and the control valve for the conveyor / magnetic separator (the same as in FIG. 2). ), Whereby the hydraulic oil from the hydraulic pump is supplied to the corresponding hydraulic motor 15,
The feeder 4, the jaw crusher 3, the conveyor 5, and the magnetic separator 6 are driven.

In the above description, the track frame 9
Constitutes a frame, the crawler track 8a constitutes traveling means, and the jaw crusher 3 constitutes a crushing device.

The left and right directions in FIGS. 1 and 2 correspond to the longitudinal direction of the crusher mounting portion, and the left side in FIGS. 1 and 2 corresponds to one longitudinal direction of the crusher mounting portion. 2 corresponds to the other side in the longitudinal direction of the crusher mounting portion.

Further, the rear end surfaces 9a of the members 9a, 9b
A, 9bA constitutes a missing shape portion that becomes more and more deficient as viewed downward in a side cross section, and the support member 105a constitutes an intermediate member that suspends and supports the carry-out side portion of the conveyor.

Next, the operation and operation of this embodiment will be described below.

When the material to be crushed is put into the hopper 2 arranged on the front side of the truck frame crusher mounting portion 9A, the material to be crushed is sorted in the feeder 4 while only those having a predetermined particle size or more are sorted. It is guided to the crusher 3 and crushed to a predetermined size by the jaw crusher 3. The crushed crushed material is discharged from the space below the jaw crusher 3, falls on the conveyor 5, is received, and is conveyed to the rear side of the crusher mounting portion 9A (opposite the hopper 2). The magnetic material (for example, rebar pieces mixed in the concrete construction waste material) mixed in the crushed material is removed by the magnetic separator 6 and the size thereof is almost equalized, and finally the rear part of the crusher 1 (in FIG. 1) (Right end).

At this time, when concrete containing, for example, a reinforcing bar is introduced into the jaw crusher 3 as a material to be crushed under the background of the recent promotion of waste recycling, the reinforcing bar included in the concrete is not crushed, and the jaw crusher 3 is not crushed. From outside, and may be discharged to the lower part of the jaw crusher 3 in a complicatedly bent shape. In such a case, the bent rebar stays between the discharge port at the lower part of the jaw crusher 3 and the conveyor 5 below the jaw crusher 3, or the nearby rebar falls immediately after the rebar falls on the conveyor 5 and starts being conveyed. There is a possibility of being caught by the structure and staying. If such a stagnation occurs, it is necessary to immediately stop the operation of the jaw crusher 3 and remove the stagnation (clogging) of the reinforcing bar.

Such maintenance work is performed by an operator directly entering the space below the jaw crusher 3.
The worker first gets on the conveyor 5 from the side near the power unit 32 immediately behind the crawler crawler 8a, and then goes down on the conveyor 5 to reach the space below the jaw crusher 3. This is conveyor 5
The jaw crusher 3
A cover (not shown) for preventing the crushed material falling from below from spilling out, and a passage for guiding the fine particles sorted and dropped from between the serrated plates 4a of the grizzly feeder 4 to the conveyor 5 ( This is because it is difficult to penetrate from the front side of the crawler track 8a because the chute 4b is provided.

Therefore, in response to such a worker's intrusion route, in the self-propelled crusher 1 of the present embodiment, as described above, the support structure below the power unit 32 is attached to the track frame crusher mounting portion. 9A, power unit frame loading member 109, power unit frame 32a
And the power unit frame rear end face 32aA is positioned rearward of the power unit frame loading member rear end face 109A, and the power unit frame loading member rear end face 109A is attached to the track frame crusher mounting portion 9A rear end face 9aA. , 9b
A step-like support structure located on the rear side of A. Thereby, a wide space can be formed below the power unit frame 32a. Further, by making the track frame crusher mounting portions 9aA and 9bA obliquely cut in an inverted trapezoidal shape, the above space can be expanded only in a region corresponding to the cut portion. Therefore, it is possible to sufficiently secure a space (shown in FIG. 1A) for a worker to enter during the above maintenance.

On the other hand, at this time, the weight of the power unit 32 is finally passed through the power unit frame 32a and the power unit frame loading member 109, which form the foundation lower structure of the power unit 32, and finally by the rear end of the track frame crusher mounting portion 9A. Supported. At this time, in the self-propelled crusher 1 of the present embodiment, as described above, the power unit frame rear side end face 32aA
To the rear end surface 109A of the power unit frame loading member.
And the rear end surface 109A of the power unit frame loading member is positioned rearward of the rear end surfaces 9aA and 9bA of the truck frame crusher mounting portion 9A. Thus, the truck frame crusher mounting portion 9A, the power unit frame loading member 10
9. The power unit frame 32a has a stair-like support structure in which the rear end face is located further rearward as the member becomes upper, and the weight of the power unit 32 gradually increases on the front side of the crusher 1 via the stair-like structure. To be finally supported by the rear end of the track frame crusher mounting portion 9A.

Therefore, as compared with the conventional structure in which the rear end face of the power unit frame loading member coincides with the rear end face of the frame, the portion of the power unit frame 32a in which there is nothing floating at the lower portion is reduced, and the strength is improved. It is possible to provide a reasonable supporting structure. Thus, the power unit 32 that houses a heavy object such as an engine or a hydraulic pump and has a relatively heavy own weight can be supported with sufficient strength.

At this time, the unloading side (rear side) of the conveyor 5 is suspended and supported by the lower part of the power unit 32 via the support member 105a. Therefore, the own weight of the unloading side portion of the conveyor 5 is also added to the power unit 32, and therefore, a greater strength is required for the power unit supporting structure. Therefore, the stepped support structure according to the present embodiment described above is more effective.

In the above-described embodiment of the present invention, only the rear end surfaces 9aA and 9bA of the truck frame crusher mounting portion 9A are cut obliquely in an inverted trapezoidal shape. However, the present invention is not limited to this. The rear end surface 109A of the power unit frame loading member 109 may be formed into an inverted trapezoidal oblique shape, or as shown in FIG. 6A, both may be cut into an inverted trapezoidal oblique shape. . Further, the shape is not limited to the shape which is obliquely cut into an inverted trapezoidal shape, and may be a shape which is cut into a substantially arc shape as shown in FIG. Further, as shown in FIG. 6 (c), a fine stepped shape can be considered. further,
As shown in FIG. 6C, the rear end face may not be entirely cut in the vertical direction, but may be cut only in the lower part. In this case, it goes without saying that only the cut lower portion constitutes the missing shape portion. As is apparent from the gist of the present invention, in any case, the point is that it is sufficient if the shape is such that the lower the portion thereof is when viewed in a side cross section, the more the above-described effects are obtained. Similar effects can be obtained.

The application of the present invention is not limited to a small-sized self-propelled crusher as in the above-described embodiment, but may be applied to a so-called medium-sized or large-sized self-propelled crusher. Is also good. In this case, a similar effect is obtained.

Further, in the above, as the prime mover,
The case where the invention is applied to a self-propelled crusher equipped with an engine has been described as an example, but the invention is not limited to this. For example, the invention may be applied to a self-propelled crusher equipped with an electric motor or the like as a prime mover.

In the above, the jaw crusher 3 which crushes the moving teeth 3a and the fixed teeth 3b is used as a crushing device.
Although the self-propelled crusher 1 provided with an example has been described as an example, the present invention is not limited to this. A rotary crusher (such as a 6-axis crusher including a so-called roll crusher) that crushes the object by sandwiching the crushed object between the rotating bodies, and a cutter disposed on a shaft arranged in parallel, The present invention is also applicable to a crusher provided with a crushing device (a so-called biaxial shearing machine including a shredder or the like) for shearing an object to be crushed by reverse rotation. In these cases, the feeder 4 may be omitted.
In these cases, a similar effect is obtained.

Further, in the above description, the feeder 4 is provided with a grizzly feeder that vibrates a bottom plate portion including a plurality of saw-toothed plates 4a on which objects to be crushed are placed by using the driving force of a hydraulic motor. Although the traveling crusher 1 has been described as an example, the invention is not limited to this. That is, another type of feeder, for example, a crushed object input from a hopper is placed on a substantially flat bottom plate provided below the hopper, and the bottom plate is driven by a base driving mechanism based on a driving force generated by a hydraulic motor. A crusher equipped with a so-called plate feeder that reciprocates in a substantially horizontal direction to sequentially push out the preceding crushed material on the bottom plate by feeding the subsequent crushed material and sequentially supply the crushed material to the crushing device from the front end of the bottom plate. Is also applicable.

In the above description, an example in which the present invention is applied to a self-propelled crusher equipped with a feeder 4, a conveyor 5, and a magnetic separator 6 as an auxiliary machine for performing work related to crushing work by a crusher will be described. However, it is not limited to this. That is, the feeder 4, the conveyor 5, and the magnetic separator 6
Among them, a self-propelled crusher in which some are appropriately omitted, for example, a crusher that directly supplies the crushed material from the hopper 2 to the jaw crusher 3 via a duct or a chute without the feeder 4,
The present invention may be applied to the case where the magnetic separator 6 is omitted according to the working circumstances. Conversely, in addition to the feeder 4, the conveyor 5, and the magnetic separator 6, additional auxiliary machines, for example, an auxiliary conveyor (2) located downstream (or upstream) of the conveyor 5 in order to lengthen the path of the conveyor 5. Next conveyor)
The present invention may be applied to a self-propelled crusher provided with a vibrating screen located on the downstream side of the jaw crusher 3 for further sorting according to the particle size of the crushed material.

[0066]

According to the present invention, at least one of the power unit frame loading member and the frame crusher mounting portion is provided with a cut-out portion having a cut-out shape that becomes lower as viewed in a side cross section. Therefore, it is possible to ensure that the power unit support structure has sufficient strength, and at the same time, it is possible for the operator to get on the conveyor during maintenance.

[Brief description of the drawings]

FIG. 1 is a side view showing the entire structure of a self-propelled crusher according to an embodiment.

FIG. 2 is a top view of the self-propelled crusher shown in FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is a top view showing a detailed structure of a mounting portion of the truck frame crusher shown in FIG. 1, a side view viewed from a direction B in FIG. 4A, and a front view viewed from a direction C in FIG. , And FIG.
(A) It is the rear view seen from the middle D direction.

FIG. 5 is a cross-sectional view taken along a line V _A -V _{A in} FIG. 4A and a cross-sectional view taken along a line V _B -V _B in FIG. 4A.

FIG. 6 is a view showing a modified example relating to the shape of the rear end surface of the truck frame crusher mounting portion and the rear end surface of the power unit frame loading member.

[Description of Signs] 2 Hopper 3 Jaw crusher (crushing device) 4 Feeder 5 Conveyor 6 Magnetic separator 7 Crusher main body 8 Running body 8a Endless track crawler (running means) 9 Track frame (frame) 9A Crusher mounting portion 9B Leg portion 9a, b member 9aA, bA rear end surface (other end surface, missing shape portion) 32 power unit 32a power unit frame 32aA rear end surface (other end surface) 105a support member (intermediate member) 109 power unit frame loading member 109A Back side end face (other side end face, missing shape part)

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Mitsuo Watanabe 1-2 Sasagaoka, Mizuguchi-machi, Koka-gun, Shiga Prefecture F-term in Hitachi Construction Machinery Tierra Shiga Plant (reference) 4D063 AA08 GA07 GC01 GC08 GD01 4D067 CG07 DD06 EE02 EE04 EE17 EE50 GA06 GB03

Claims (3)

[Claims] 1. A frame provided with a crusher attachment portion and a leg portion, a traveling means provided on the leg portion, and a hopper provided on one longitudinal side of the crusher attachment portion for receiving a material to be crushed. A crushing device for crushing the crushed material received by the hopper, a feeder for conveying the crushed material received by the hopper to the crushing device, and a crusher mounting portion provided on the other side in the longitudinal direction of the mounting portion. In a self-propelled crusher comprising a power unit and a conveyor for carrying out the crushed material crushed by the crushing device to the other side, a power unit frame forming a basic lower structure of the power unit, and Provided on the other side in the longitudinal direction,
A power unit frame loading member on which the power unit frame is loaded, and the other end surface of the power unit frame is further on the other side than the other side end surface of the power unit frame loading member. Wherein the other end surface of the power unit frame loading member is further located on the other side than the other side end surface of the crusher mounting portion, and the power unit frame loading member and The self-propelled crusher according to claim 1, wherein at least one of the end faces of the crusher attachment portion on the other side has a cut-out portion that is cut off downward as viewed in a side cross section. 2. The self-propelled crushing machine according to claim 1, wherein said defective portion has a shape which is obliquely cut into an inverted trapezoidal shape. 3. The self-propelled crushing machine according to claim 1, wherein an unloading side portion of said conveyor is suspended and supported by said power unit via an intermediate member.